Jax benefits greatly from items that have both Ability Power and Attack Damage such as Guinsoo's Rageblade and Hextech Gunblade.
Jax can Leap Strike to friendly units, including wards. You can use them to plan your escape.
Despair is very effective against other tanks, so make sure you're in range of opponents with the highest Health.
Amumu is highly dependent on teammates, so try laning with your friends for maximum effectiveness.
Cooldown Reduction on Amumu is very strong, but it's often difficult to itemize for it. Grab the Golem buff whenever possible to gain Cooldown Reduction without sacrificing stats.
The Jax Amumu synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Amumu, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Jax sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Amumu. His KDA worsened from NaN to NaN. This decrease shows that Amumu helps Jax perform not as well in ranked League of Legends rounds. Yet, the small difference demonstrates that this performance change is only marginal.
When Jax tries to synergize with Amumu, he gets a noticable increase in his full damage output. This change may signal that Amumu provides protection for him to deal more damage or that his presence also helps extend the round's duration. Similarly, when Jax is played alongside Amumu on the same team, he usually scores many fewer killing sprees compared to when he plays on his own. This is contrasting evidence that he is worse when playing alongside Amumu.
Moreover, when Jax plays with Amumu on the same side, he on average takes a little less damage than when he plays alone. Getting dealt not as much damage may indicate that Amumu does a decent job of protecting Jax during team fights.
There is no top companion for Jax that will always be his ideal synergy. Yet, Amumu is a very typical teammate for Jax. By being on the same side as Jax, he drops their win rate by -0.9% to 49.9%. This signals that there is only a small bond between Jax and Amumu that results in them performing worse together than alone.
Amumu has a lower difficulty than Jax. That means you don't need to be cautious when lining up Amumu comrades to go into battle on the same side as, as they will have to have a lower level of skill to play well with you.
When playing together, Jax players should see an overall large increase in your team’s ability to deal magic damage. Together, these champions can deal quite a lot of AP type damage.
Conversely, by pairing Jax and Amumu together, you will not be providing your team enough anti-tank damage dealing potential. Make sure to include other champs on your team that helps cover this relative hole in this pairing's playstyle.
Regardless of the ability of your Amumu ally, you need to focus on increasing your gold income, outlasting your enemies, and clearing objectives. If you follow these simple suggestions, you should do well anyway.
To learn all of the intricacies of Jax to pair well with Amumu during both the lane and mid / late game phases of League of Legends games, you should keep reading to master additional lessons on this champion pairing. If you listen to the build and tips presented above, you will increase your win rate significantly.
The most important items to include in your Jax and Amumu synergy build consist of Sterak's Gage, Trinity Force, and Titanic Hydra. When Jax combined at least these three items in his build, he did much better as an ally of Amumu than with many other common item sets. In fact, Jax had an average winrate of 49.9% when synergizing his build and playstyle to Amumu with these items in his kit.
To have the best probability of crushing your oponents, Jax players should take the Conqueror, Triumph, Legend: Alacrity, Last Stand, Bone Plating, and Unflinching runes from the Precision and Resolve rune sets. Out of all the rune builds players used for Jax and Amumu pairings, this mixture of runes resulted in the highest win rate. Notably, these runes gave a 49.9% win rate overall.
If you need to get Jax and Amumu synergy tips and stats for a a particular division, feel free to select one from the selection menu shown above. By default, the stats and build suggestions shown are calculated using every match completed with these champs.